InChI=1S/C21H20O12/c22-9-3-2-7-15-8(5-30-16(7)11(9)24)6-1-4-10(23)18(17(6)31-15)32-21-14(27)12(25)13(26)19(33-21)20(28)29/h1-4,8,12-15,19,21-27H,5H2,(H,28,29)